{"cited_by_count":1615083,"description":"This cluster of papers focuses on the advances in organic light-emitting diodes (OLEDs), particularly in the development of highly efficient phosphorescent and delayed fluorescence materials, management of excitons, electron transport materials, and addressing efficiency roll-off. 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local answer requires separate source review","truth_status":"Subject descriptor, not a factual answer or a demonstrated knowledge gap","reviewed_answer":null}